Electronic device having charging circuit

This application is a continuation application, claiming priority under § 365(c), of an International application No. PCT/KR2022/021585, filed on Dec. 29, 2022, which is based on and claims the benefit of a Korean patent application number 10-2022-0041831, filed on Apr. 4, 2022, in the Korean Intellectual Property Office, and of a Korean patent application number 10-2022-0082389, filed on Jul. 5, 2022, in the Korean Intellectual Property Office, the disclosure of each of which is incorporated by reference herein in its entirety.

The disclosure relates to an electronic device having a charging circuit. More particularly, the disclosure relates to an electronic device having a simple circuit configuration for charging a battery in consideration of compatibility.

An adaptor (for example, a travel adaptor or a wall adaptor) may be connected to a power reception device through a cable and configured to supply power to the power reception device. The power reception device (for example, a smartphone) may charge a battery with power supplied from the adaptor and supply power to a load circuit (for example, a processor, a display, or a camera). For example, the power supplied from the adaptor to the power reception device may be distributed to the battery and/or the load circuit through a charging circuit.

In a direct charging technology, the voltage and current control are handled by an adaptor supporting a programmable power supply (PPS) function rather than by the power reception device including the battery, and thus heating in the power reception device can be minimized and the battery can be quickly charged.

When a direct charging circuit in the power reception device is used to charge the battery, low heating and high charging efficiency are provided, but a ratio of the output voltage to the input voltage (hereinafter, referred to as a voltage conversion ratio) is fixed to, for example, 2:1. When an adaptor which does not support the PPS function is connected to the electronic device, the direct charging circuit have difficulty in charging the battery. Accordingly, a switching charging circuit capable of adjusting the voltage conversion ratio may be included in the power reception device in case the adaptor connected to the power reception device does not support the PPS function.

The above information is presented as background information only to assist with an understanding of the disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with regard to the disclosure.

When a voltage and/or current value of a power signal received from an adaptor is converted, a switching charging circuit has relatively low efficiency and thus may have serious heating when being applied to quick charging. Further, in consideration of compatibility, not only a direct charging circuit but also the switching charging circuit should be included in the electronic device. In this case, a mounting space may be lack or costs of the electronic device may increase. When the battery is charged, internal temperature of the battery may increase. When a load circuit has relatively much power consumption due to execution of an application (for example, game) requiring high-specification performance, internal temperature of the battery which is being charged may be aggravated by heat generated in the load circuit due to power consumption.

Aspects of the disclosure are to address at least the above-mentioned problems and/or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the disclosure is to provide an electronic device configured to minimize heating and quickly charge a battery.

Another aspect of the disclosure is to provide an electronic device having a simple circuit configuration for charging the battery in consideration of compatibility.

According to an embodiment of the disclosure, when the load circuit has relatively much power consumption while an adaptor is connected to the electronic device, the electronic device may temporarily stop power supply to the battery and thus suppress an increase in internal temperature of the battery.

Additional aspects will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the presented embodiments.

1 1 1 2 1 3 1 4 1 2 1 3 1 1 1 2 1 3 1 4 2 1 2 2 2 3 2 4 2 1 2 2 2 3 2 4 1 1 1 3 1 2 1 4 1 1 1 3 1 2 1 4 1 1 1 2 1 1 1 4 1 2 1 3 1 1 1 2 1 1 1 2 In accordance with an aspect of the disclosure, a portable electronic device is provided. The portable electronic device includes a connector including a power terminal and a data terminal, a first power conversion circuit, a second power conversion circuit, and a control circuit electrically connected to the data terminal, the first power conversion circuit, and the second power conversion circuit. The first power conversion circuit includes a first input terminal connected to the power terminal, a first output terminal connected to a load circuit and a battery of the portable electronic device, a switch-, a switch-, a switch-, and a switch-connected in series from the first input terminal to a ground of the portable electronic device, an inductor having one end connected to a point between the switch-and the switch-and the other end connected to the first output terminal, and a first capacitor having one end connected to a point between the switch-and the switch-and the other end connected to a point between the switch-and the switch-. The second power conversion circuit includes a second input terminal connected to the power terminal, a second output terminal connected to the load circuit and the battery, a switch-and a switch-connected in series from the second input terminal to the second output terminal, a switch-and a switch-connected in series from the second output terminal to the ground, and a second capacitor having one end connected to a point between the switch-and the switch-and the other end connected to a point between the switch-and the switch-. The control circuit is configured to identify whether a power supply device connected to the connector supports a programmable power supply (PPS) function through the data terminal. The control circuit is configured to, in case that it is identified that the power supply device supports the PPS function, output a first switching control signal having a switching frequency equal to a resonant frequency of the first capacitor and the inductor and a duty cycle of 50% and alternating a first switching state in which the switch-and the switch-are closed and the switch-and the switch-are open and a second switching state in which the switch-and the switch-are open and the switch-and the switch-are closed to the first power conversion circuit and output a second switching control signal having a switching frequency and a duty cycle, which are identical to the switching frequency and the duty cycle of the first switching control signal but a phase difference of 180 degrees from the first switching control signal to the second power conversion circuit. The control circuit is configured to, in case that it is identified that the power supply device does not support the PPS function, deactivate the second power conversion circuit and output a third switching control signal having a switching frequency equal to or higher than the resonant frequency of the first capacitor and the inductor, making the switch-and the switch-have an equal duty cycle and a phase difference of 180 degrees, making the switch-and the switch-have a complementary relation, and making the switch-and the switch-have a complementary relation to the first power conversion circuit. The control circuit is configured to make the third switching control signal have a third switching state in which both the switch-and the switch-are closed or a fourth switching state in which both the switch-and the switch-are open according to the charging state of the battery.

1 1 1 2 1 3 1 4 1 2 1 3 1 1 1 2 1 3 1 4 2 1 2 2 2 3 2 4 2 1 2 2 2 3 2 4 1 1 1 3 1 2 1 4 1 1 1 3 1 2 1 4 In accordance with another aspect of the disclosure, a portable electronic device is provided. The portable electronic device includes a connector comprising a power terminal and a data terminal, a first power conversion circuit, a second power conversion circuit, a battery switch, and a control circuit electrically connected to the data terminal, the first power conversion circuit, the second power conversion circuit, and the battery switch. The first power conversion circuit includes a first input terminal connected to the power terminal, a first output terminal connected to a load circuit of the portable electronic device, a switch-, a switch-, a switch-, and a switch-connected in series from the first input terminal to a ground of the portable electronic device, an inductor having one end connected to a point between the switch-and the switch-and the other end connected to the first output terminal, and a first capacitor having one end connected to a point between the switch-and the switch-and the other end connected to a point between the switch-and the switch-. The second power conversion circuit includes a second input terminal connected to the power terminal, a second output terminal connected to a battery of the portable electronic device, a switch-and a switch-connected in series from the second input terminal to the second output terminal, a switch-and a switch-connected in series from the second output terminal to the ground, and a second capacitor having one end connected to a point between the switch-and the switch-and the other end connected to a point between the switch-and the switch-. One end of the battery switch is connected to a point between the first output terminal and the load circuit and the other end of the battery switch is connected to a point between the second output terminal and the battery. The control circuit is configured to, in case that it is identified that the power supply device supports or does not support a PPS function, a voltage value which can be supplied is a predetermined value, and a predetermined first event is generated by the electronic device, open the battery switch, deactivate the second power conversion circuit, and output a first switching control signal having a switching frequency equal to a resonant frequency of the first capacitor and the inductor and a duty cycle of 50% and alternating a first switching state in which the switch-and the switch-are closed and the switch-and switch-are open and a second switching state in which the switch-and the switch-are open and the switch-and the switch-are closed to the first power conversion circuit.

1 1 1 2 1 3 1 4 1 2 1 3 1 1 1 2 1 3 1 4 2 1 2 2 2 3 2 4 2 1 2 2 2 3 2 4 1 1 1 3 1 2 1 4 1 1 1 3 1 2 1 4 1 1 1 2 1 1 1 4 1 2 1 3 1 1 1 2 1 1 1 2 In accordance with another aspect of the disclosure, a method of operating a portable electronic device is provided. The portable electronic device includes a connector including a power terminal and a data terminal, a first power conversion circuit, and a second power conversion circuit. The first power conversion circuit includes a first input terminal connected to the power terminal, a first output terminal connected to a load circuit and a battery of the portable electronic device, a switch-, a switch-, a switch-, and a switch-connected in series from the first input terminal to a ground of the portable electronic device, an inductor having one end connected to a point between the switch-and the switch-and the other end connected to the first output terminal, and a first capacitor having one end connected to a point between the switch-and the switch-and the other end connected to a point between the switch-and the switch-. The second power conversion circuit includes a second input terminal connected to the power terminal, a second output terminal connected to the load circuit and the battery, a switch-and a switch-connected in series from the second input terminal to the second output terminal, a switch-and a switch-connected in series from the second output terminal to the ground, and a second capacitor having one end connected to a point between the switch-and the switch-and the other end connected to a point between the switch-and the switch-. The method includes identifying whether a power supply device connected to the connector supports a programmable power supply (PPS) function through the data terminal, in case that it is identified that the power supply device supports the PPS function, outputting a first switching control signal having a switching frequency equal to a resonant frequency of the first capacitor and the inductor and a duty cycle of 50% and alternating a first switching state in which the switch-and the switch-are closed and the switch-and the switch-are open and a second switching state in which the switch-and the switch-are open and the switch-and the switch-are closed to the first power conversion circuit and output a second switching control signal having a switching frequency and a duty cycle, which are identical to the switching frequency and the duty cycle of the first switching control signal but a phase difference of 180 degrees from the first switching control signal to the second power conversion circuit, in case that it is identified that the power supply device does not support the PPS function, deactivating the second power conversion circuit and outputting a third switching control signal having a switching frequency equal to or higher than the resonant frequency of the first capacitor and the inductor, making the switch-and the switch-have an equal duty cycle and a phase difference of 180 degrees, making the switch-and the switch-have a complementary relation, and making the switch-and the switch-have a complementary relation to the first power conversion circuit, and making the third switching control signal have a third switching state in which both the switch-and the switch-are closed or a fourth switching state in which both the switch-and the switch-are open according to the charging state of the battery.

According to various embodiments of the disclosure, an electronic device can have a simple circuit configuration for charging a battery and minimize heating. According to various embodiments of the disclosure, an electronic device can quickly charge a battery and suppress an increase in internal temperature of the battery.

Other aspects, advantages, and salient features of the disclosure will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses various embodiments of the disclosure.

Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures.

The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the disclosure as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the disclosure. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the disclosure is provided for illustration purpose only and not for the purpose of limiting the disclosure as defined by the appended claims and their equivalents.

It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a component surface” includes reference to one or more of such surfaces.

1 FIG. is a block diagram illustrating an electronic device in a network environment according to an embodiment of the disclosure.

1 FIG. 101 100 102 198 104 108 199 101 104 108 101 120 130 150 155 160 170 176 177 178 179 180 188 189 190 196 197 178 101 101 176 180 197 160 Referring to, an electronic devicein a network environmentmay communicate with an external electronic devicevia a first network(e.g., a short-range wireless communication network), or at least one of an external electronic deviceor a servervia a second network(e.g., a long-range wireless communication network). According to an embodiment of the disclosure, the electronic devicemay communicate with the external electronic devicevia the server. According to an embodiment of the disclosure, the electronic devicemay include a processor, a memory, an input module, a sound output module, a display module, an audio module, a sensor module, an interface, a connecting terminal, a haptic module, a camera module, a power management module, a battery, a communication module, a subscriber identification module (SIM), or an antenna module. In some embodiments of the disclosure, at least one of the components (e.g., the connecting terminal) may be omitted from the electronic device, or one or more other components may be added in the electronic device. In some embodiments of the disclosure, some of the components (e.g., the sensor module, the camera module, or the antenna module) may be implemented as a single component (e.g., the display module).

120 140 101 120 120 176 190 132 132 134 120 121 123 121 101 121 123 123 121 123 121 The processormay execute, for example, software (e.g., a program) to control at least one other component (e.g., a hardware or software component) of the electronic devicecoupled with the processor, and may perform various data processing or computation. According to one embodiment of the disclosure, as at least part of the data processing or computation, the processormay store a command or data received from another component (e.g., the sensor moduleor the communication module) in a volatile memory, process the command or the data stored in the volatile memory, and store resulting data in a non-volatile memory. According to an embodiment of the disclosure, the processormay include a main processor(e.g., a central processing unit (CPU) or an application processor (AP)), or an auxiliary processor(e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is operable independently from, or in conjunction with, the main processor. For example, when the electronic deviceincludes the main processorand the auxiliary processor, the auxiliary processormay be adapted to consume less power than the main processor, or to be specific to a specified function. The auxiliary processormay be implemented as separate from, or as part of the main processor.

123 160 176 190 101 121 121 121 121 123 180 190 123 123 101 108 The auxiliary processormay control at least some of functions or states related to at least one component (e.g., the display module, the sensor module, or the communication module) among the components of the electronic device, instead of the main processorwhile the main processoris in an inactive (e.g., a sleep) state, or together with the main processorwhile the main processoris in an active state (e.g., executing an application). According to an embodiment of the disclosure, the auxiliary processor(e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., the camera moduleor the communication module) functionally related to the auxiliary processor. According to an embodiment of the disclosure, the auxiliary processor(e.g., the neural processing unit) may include a hardware structure specified for artificial intelligence model processing. An artificial intelligence model may be generated by machine learning. Such learning may be performed, e.g., by the electronic devicewhere the artificial intelligence is performed or via a separate server (e.g., the server). Learning algorithms may include, but are not limited to, e.g., supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The artificial intelligence model may include a plurality of artificial neural network layers. The artificial neural network may be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), deep Q-network or a combination of two or more thereof but is not limited thereto. The artificial intelligence model may, additionally or alternatively, include a software structure other than the hardware structure.

130 120 176 101 140 130 132 134 The memorymay store various data used by at least one component (e.g., the processoror the sensor module) of the electronic device. The various data may include, for example, software (e.g., the program) and input data or output data for a command related thereto. The memorymay include the volatile memoryor the non-volatile memory.

140 130 142 144 146 The programmay be stored in the memoryas software, and may include, for example, an operating system (OS), middleware, or an application.

150 120 101 101 150 The input modulemay receive a command or data to be used by another component (e.g., the processor) of the electronic device, from the outside (e.g., a user) of the electronic device. The input modulemay include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

155 101 155 The sound output modulemay output sound signals to the outside of the electronic device. The sound output modulemay include, for example, a speaker or a receiver. The speaker may be used for general purposes, such as playing multimedia or playing record. The receiver may be used for receiving incoming calls. According to an embodiment of the disclosure, the receiver may be implemented as separate from, or as part of the speaker.

160 101 160 160 The display modulemay visually provide information to the outside (e.g., a user) of the electronic device. The display modulemay include, for example, a display, a hologram device, or a projector and control circuitry to control a corresponding one of the display, hologram device, and projector. According to an embodiment of the disclosure, the display modulemay include a touch sensor adapted to detect a touch, or a pressure sensor adapted to measure the intensity of force incurred by the touch.

170 170 150 155 102 101 The audio modulemay convert a sound into an electrical signal and vice versa. According to an embodiment of the disclosure, the audio modulemay obtain the sound via the input module, or output the sound via the sound output moduleor a headphone of an external electronic device (e.g., the external electronic device) directly (e.g., wiredly) or wirelessly coupled with the electronic device.

176 101 101 176 The sensor modulemay detect an operational state (e.g., power or temperature) of the electronic deviceor an environmental state (e.g., a state of a user) external to the electronic device, and then generate an electrical signal or data value corresponding to the detected state. According to an embodiment of the disclosure, the sensor modulemay include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

177 101 102 177 The interfacemay support one or more specified protocols to be used for the electronic deviceto be coupled with the external electronic device (e.g., the external electronic device) directly (e.g., wiredly) or wirelessly. According to an embodiment of the disclosure, the interfacemay include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface.

178 101 102 178 A connecting terminalmay include a connector via which the electronic devicemay be physically connected with the external electronic device (e.g., the external electronic device). According to an embodiment of the disclosure, the connecting terminalmay include, for example, a HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

179 179 The haptic modulemay convert an electrical signal into a mechanical stimulus (e.g., a vibration or a movement) or electrical stimulus which may be recognized by a user via his tactile sensation or kinesthetic sensation. According to an embodiment of the disclosure, the haptic modulemay include, for example, a motor, a piezoelectric element, or an electric stimulator.

180 180 The camera modulemay capture a still image or moving images. According to an embodiment of the disclosure, the camera modulemay include one or more lenses, image sensors, image signal processors, or flashes.

188 101 188 The power management modulemay manage power supplied to the electronic device. According to one embodiment of the disclosure, the power management modulemay be implemented as at least part of, for example, a power management integrated circuit (PMIC).

189 101 189 The batterymay supply power to at least one component of the electronic device. According to an embodiment of the disclosure, the batterymay include, for example, a primary cell which is not rechargeable, a secondary cell which is rechargeable, or a fuel cell.

190 101 102 104 108 190 120 190 192 194 198 199 192 101 198 199 196 The communication modulemay support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic deviceand the external electronic device (e.g., the external electronic device, the external electronic device, or the server) and performing communication via the established communication channel. The communication modulemay include one or more communication processors that are operable independently from the processor(e.g., the application processor (AP)) and supports a direct (e.g., wired) communication or a wireless communication. According to an embodiment of the disclosure, the communication modulemay include a wireless communication module(e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module(e.g., a local area network (LAN) communication module or a power line communication (PLC) module). A corresponding one of these communication modules may communicate with the external electronic device via the first network(e.g., a short-range communication network, such as Bluetooth™, wireless-fidelity (Wi-Fi) direct, or infrared data association (IrDA)) or the second network(e.g., a long-range communication network, such as a legacy cellular network, a fifth generation (5G) network, a next-generation communication network, the Internet, or a computer network (e.g., LAN or wide area network (WAN)). These various types of communication modules may be implemented as a single component (e.g., a single chip), or may be implemented as multi components (e.g., multi chips) separate from each other. The wireless communication modulemay identify and authenticate the electronic devicein a communication network, such as the first networkor the second network, using subscriber information (e.g., international mobile subscriber identity (IMSI)) stored in the subscriber identification module.

192 192 192 192 101 104 199 192 The wireless communication modulemay support a 5G network, after a fourth generation (4G) network, and next-generation communication technology, e.g., new radio (NR) access technology. The NR access technology may support enhanced mobile broadband (eMBB), massive machine type communications (mMTC), or ultra-reliable and low-latency communications (URLLC). The wireless communication modulemay support a high-frequency band (e.g., the millimeter wave (mmWave) band) to achieve, e.g., a high data transmission rate. The wireless communication modulemay support various technologies for securing performance on a high-frequency band, such as, e.g., beamforming, massive multiple-input and multiple-output (massive MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication modulemay support various requirements specified in the electronic device, an external electronic device (e.g., the external electronic device), or a network system (e.g., the second network). According to an embodiment of the disclosure, the wireless communication modulemay support a peak data rate (e.g., 20 gigabits per second (Gbps) or more) for implementing eMBB, loss coverage (e.g., 164 dB or less) for implementing mMTC, or U-plane latency (e.g., 0.5 ms or less for each of downlink (DL) and uplink (UL), or a round trip of 1 ms or less) for implementing URLLC.

197 101 197 197 198 199 190 192 190 197 The antenna modulemay transmit or receive a signal or power to or from the outside (e.g., the external electronic device) of the electronic device. According to an embodiment of the disclosure, the antenna modulemay include an antenna including a radiating element composed of a conductive material or a conductive pattern formed in or on a substrate (e.g., a printed circuit board (PCB)). According to an embodiment of the disclosure, the antenna modulemay include a plurality of antennas (e.g., array antennas). In such a case, at least one antenna appropriate for a communication scheme used in the communication network, such as the first networkor the second network, may be selected, for example, by the communication module(e.g., the wireless communication module) from the plurality of antennas. The signal or the power may then be transmitted or received between the communication moduleand the external electronic device via the selected at least one antenna. According to an embodiment of the disclosure, another component (e.g., a radio frequency integrated circuit (RFIC)) other than the radiating element may be additionally formed as part of the antenna module.

197 According to various embodiments of the disclosure, the antenna modulemay form a mmWave antenna module. According to an embodiment of the disclosure, the mmWave antenna module may include a printed circuit board, a RFIC disposed on a first surface (e.g., the bottom surface) of the printed circuit board, or adjacent to the first surface and capable of supporting a designated high-frequency band (e.g., the mmWave band), and a plurality of antennas (e.g., array antennas) disposed on a second surface (e.g., the top or a side surface) of the printed circuit board, or adjacent to the second surface and capable of transmitting or receiving signals of the designated high-frequency band.

At least some of the above-described components may be coupled mutually and communicate signals (e.g., commands or data) therebetween via an inter-peripheral communication scheme (e.g., a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)).

101 104 108 199 102 104 101 101 102 104 108 101 101 101 101 101 104 108 104 108 199 101 According to an embodiment of the disclosure, commands or data may be transmitted or received between the electronic deviceand the external electronic devicevia the servercoupled with the second network. Each of the external electronic devicesormay be a device of a same type as, or a different type, from the electronic device. According to an embodiment of the disclosure, all or some of operations to be executed at the electronic devicemay be executed at one or more of the external electronic devices,, or. For example, if the electronic deviceshould perform a function or a service automatically, or in response to a request from a user or another device, the electronic device, instead of, or in addition to, executing the function or the service, may request the one or more external electronic devices to perform at least part of the function or the service. The one or more external electronic devices receiving the request may perform the at least part of the function or the service requested, or an additional function or an additional service related to the request, and transfer an outcome of the performing to the electronic device. The electronic devicemay provide the outcome, with or without further processing of the outcome, as at least part of a reply to the request. To that end, a cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic devicemay provide ultra low-latency services using, e.g., distributed computing or mobile edge computing. In another embodiment of the disclosure, the external electronic devicemay include an internet-of-things (IoT) device. The servermay be an intelligent server using machine learning and/or a neural network. According to an embodiment of the disclosure, the external electronic deviceor the servermay be included in the second network. The electronic devicemay be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology or IoT-related technology.

2 FIG. 200 188 189 is a block diagramillustrating the power management moduleand the batteryaccording to an embodiment of the disclosure.

2 FIG. 188 210 220 230 210 189 101 210 189 189 101 178 197 Referring to, the power management modulemay include a charging circuitry, a power adjuster, or a power gauge. The charging circuitrymay charge the batteryby using power supplied from an external power source outside the electronic device. According to an embodiment of the disclosure, the charging circuitrymay select a charging scheme (e.g., normal charging or quick charging) based at least in part on a type of the external power source (e.g., a power outlet, a USB, or wireless charging), magnitude of power suppliable from the external power source (e.g., about 20 Watt or more), or an attribute of the battery, and may charge the batteryusing the selected charging scheme. The external power source may be connected with the electronic device, for example, directly via the connecting terminalor wirelessly via the antenna module.

220 189 220 189 101 220 230 189 189 The power adjustermay generate a plurality of powers having different voltage levels or different current levels by adjusting a voltage level or a current level of the power supplied from the external power source or the battery. The power adjustermay adjust the voltage level or the current level of the power supplied from the external power source or the batteryinto a different voltage level or current level appropriate for each of some of the components included in the electronic device. According to an embodiment of the disclosure, the power adjustermay be implemented in the form of a low drop out (LDO) regulator or a switching regulator. The power gaugemay measure use state information about the battery(e.g., a capacity, a number of times of charging or discharging, a voltage, or a temperature of the battery).

188 210 220 230 189 189 188 189 189 188 189 188 120 The power management modulemay determine, using, for example, the charging circuitry, the power adjuster, or the power gauge, charging state information (e.g., lifetime, over voltage, low voltage, over current, over charge, over discharge, overheat, short, or swelling) related to the charging of the batterybased at least in part on the measured use state information about the battery. The power management modulemay determine whether the state of the batteryis normal or abnormal based at least in part on the determined charging state information. If the state of the batteryis determined to abnormal, the power management modulemay adjust the charging of the battery(e.g., reduce the charging current or voltage, or stop the charging). According to an embodiment of the disclosure, at least some of the functions of the power management modulemay be performed by an external control device (e.g., the processor).

189 240 240 189 240 The battery, according to an embodiment of the disclosure, may include a protection circuit module (PCM). The PCMmay perform one or more of various functions (e.g., a pre-cutoff function) to prevent a performance deterioration of, or a damage to, the battery. The PCM, additionally or alternatively, may be configured as at least part of a battery management system (BMS) capable of performing various functions including cell balancing, measurement of battery capacity, count of a number of charging or discharging, measurement of temperature, or measurement of voltage.

189 176 230 188 176 240 189 According to an embodiment of the disclosure, at least part of the charging state information or use state information regarding the batterymay be measured using a corresponding sensor (e.g., a temperature sensor) of the sensor module, the power gauge, or the power management module. According to an embodiment of the disclosure, the corresponding sensor (e.g., a temperature sensor) of the sensor modulemay be included as part of the PCM, or may be disposed near the batteryas a separate device.

The electronic device according to various embodiments may be one of various types of electronic devices. The electronic devices may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. According to an embodiment of the disclosure, the electronic devices are not limited to those described above.

It should be appreciated that various embodiments of the disclosure and the terms used therein are not intended to limit the technological features set forth herein to particular embodiments and include various changes, equivalents, or replacements for a corresponding embodiment. With regard to the description of the drawings, similar reference numerals may be used to refer to similar or related elements. It is to be understood that a singular form of a noun corresponding to an item may include one or more of the things, unless the relevant context clearly indicates otherwise. As used herein, each of such phrases as “A or B,” “at least one of A and B,” “at least one of A or B,” “A, B, or C,” “at least one of A, B, and C,” and “at least one of A, B, or C,” may include any one of, or all possible combinations of the items enumerated together in a corresponding one of the phrases. As used herein, such terms as “1st” and “2nd,” or “first” and “second” may be used to simply distinguish a corresponding component from another, and does not limit the components in other aspect (e.g., importance or order). It is to be understood that if an element (e.g., a first element) is referred to, with or without the term “operatively” or “communicatively”, as “coupled with,” “coupled to,” “connected with,” or “connected to” another element (e.g., a second element), it means that the element may be coupled with the other element directly (e.g., wiredly), wirelessly, or via a third element.

As used in connection with various embodiments of the disclosure, the term “module” may include a unit implemented in hardware, software, or firmware, and may interchangeably be used with other terms, for example, “logic,” “logic block,” “part,” or “circuitry”. A module may be a single integral component, or a minimum unit or part thereof, adapted to perform one or more functions. For example, according to an embodiment of the disclosure, the module may be implemented in a form of an application-specific integrated circuit (ASIC).

140 136 138 101 120 101 Various embodiments as set forth herein may be implemented as software (e.g., the program) including one or more instructions that are stored in a storage medium (e.g., an internal memoryor an external memory) that is readable by a machine (e.g., the electronic device). For example, a processor (e.g., the processor) of the machine (e.g., the electronic device) may invoke at least one of the one or more instructions stored in the storage medium, and execute it, with or without using one or more other components under the control of the processor. This allows the machine to be operated to perform at least one function according to the at least one instruction invoked. The one or more instructions may include a code generated by a complier or a code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Wherein, the term “non-transitory” simply means that the storage medium is a tangible device, and does not include a signal (e.g., an electromagnetic wave), but this term does not differentiate between where data is semi-permanently stored in the storage medium and where the data is temporarily stored in the storage medium.

According to an embodiment of the disclosure, a method according to various embodiments of the disclosure may be included and provided in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., a compact disc read only memory (CD-ROM)), or be distributed (e.g., downloaded or uploaded) online via an application store (e.g., PlayStore™), or between two user devices (e.g., smart phones) directly. If distributed online, at least part of the computer program product may be temporarily generated or at least temporarily stored in the machine-readable storage medium, such as memory of the manufacturer's server, a server of the application store, or a relay server.

According to various embodiments of the disclosure, each component (e.g., a module or a program) of the above-described components may include a single entity or multiple entities, and some of the multiple entities may be separately disposed in different components. According to various embodiments of the disclosure, one or more of the above-described components may be omitted, or one or more other components may be added. Alternatively or additionally, a plurality of components (e.g., modules or programs) may be integrated into a single component. In such a case, according to various embodiments of the disclosure, the integrated component may still perform one or more functions of each of the plurality of components in the same or similar manner as they are performed by a corresponding one of the plurality of components before the integration. According to various embodiments of the disclosure, operations performed by the module, the program, or another component may be carried out sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order or omitted, or one or more other operations may be added.

3 FIG. 300 370 301 310 is a block diagram illustrating an electronic deviceconfigured to supply power to a load circuitby using power received from a power supply deviceand charge a batteryaccording to an embodiment of the disclosure.

3 FIG. 1 FIG. 1 FIG. 300 101 310 320 330 340 350 360 370 399 370 340 350 310 120 Referring to, the electronic device(for example, the electronic deviceof) may include the battery, a connector, a overvoltage protection circuit, a first power conversion circuit, a second power conversion circuit, a battery switch, and the load circuit (or system), a control circuit. The load circuitcollectively refers to electronic components driven using power signals received through the power conversion circuitsandand/or power signals received from the batteryand may include, for example, a processor (for example, the processorof), a display, and a camera.

301 102 300 300 300 300 300 301 300 310 399 188 301 310 1 FIG. 1 2 FIGS.and The power supply device(for example, the external electronic deviceof) may include an adaptor (for example, a travel adaptor or a wall adaptor). For example, the adaptor may convert a current characteristic of a power signal from an external power source from an alternating current (AC) to a direct current (DC) and adjust a voltage of the power signal to a predetermined voltage value. The adaptor may perform a function (for example, programmable power supply (PPS)) of changing the current and the voltage according to the control of the electronic deviceto receive the power signal. For example, the adaptor may decrease or increase the current of the power signal to be output to the electronic devicein response to a control signal received from the electronic device. The adaptor may decrease or increase the voltage of the power signal to be output to the electronic devicein response to the control signal received from the electronic devicethrough a cable. The adaptor may be a model which does not support the variable function and fixed the current and/or the voltage of the power signal to a predetermined value to output the value. When the adaptor is a model supporting the variable function, the adaptor of the power supply devicemay change the voltage (or current) of the power signal to be output to the electronic deviceto a voltage value (or current value) configured to charge the battery. When the adaptor is a model which does not support the variable function, the control circuit(for example, the power management moduleof) may adjust the voltage (or current) of the power signal received from the power supply deviceto a voltage value (or current value) configured to charge the battery.

301 320 300 301 321 320 340 350 310 301 321 The power supply devicemay be electrically connected to the connectorof the electronic devicethrough a cable (for example, a USB cable). The power supply devicemay output the power signal of which the voltage is adjusted by the adaptor and of which the current characteristic is converted to the DC to a power terminalof the connectorthrough the cable. The power conversion circuitsandmay charge the batteryby using the power signal received from the power supply devicethrough the power terminal.

320 320 321 301 322 301 300 320 321 322 The connectormay be configured to perform data communication and power reception. The connectormay include the power terminalfor receiving a power signal from the power supply deviceand a data terminalfor power delivery (PD) communication between the power supply deviceand the electronic device. For example, the connectormay be configured as a socket according to universal serial bus (USB) Type-C and connected to a plug of the USB cable. Among pins of the USB Type-C socket, a VBUS pin may be used as the power terminaland a configuration channel 1 (CC1) pin and/or a CC2 pin may be used as the data terminal.

330 321 320 340 350 300 330 The overvoltage protection circuitmay be connected to the power terminalof the connectorand prevent damage of electronic components (for example, the power conversion circuitsand) by blocking inflow of the overvoltage into the electronic device. For example, the overvoltage protection circuitmay include a Zener diode.

340 350 321 330 399 340 350 310 370 The first power conversion circuitand the second power conversion circuitmay convert the current value and/or the voltage value of the power signal received from the power terminalthrough the overvoltage protection circuiton the basis of the control of the control circuit. The first power conversion circuitand the second power conversion circuitmay supply the converted power signal to the batteryand/or the load circuit.

340 340 321 340 370 310 340 370 310 360 340 310 360 340 310 360 360 300 340 370 310 a b b b b b The first power conversion circuitmay include a first input terminalelectrically connected to the power terminaland a first output terminalelectrically connected to the load circuitand the battery. For example, as illustrated, the first output terminalmay be directly connected to the load circuit, and the batterymay be electrically connected thereto through the battery switch. For example, power supply from the first output terminalto the batteryis blocked when the battery switchis in an open state, and power may be supplied from the first output terminalto the batterywhen the battery switchis in a closed state. The battery switchmay be omitted from the configuration of the electronic device. That is, like the direct connection of the first output terminalto the load circuit, the batterymay be directly connected thereto.

340 399 340 The first power conversion circuitmay operate in a switching charging mode (for example, a buck boost circuit) or a direct charging mode (for example, an switched capacitor voltage divider (SCVD)) on the basis of the control of the control circuit. The first power conversion circuitis configured to be operable in two modes, and thus may be named a hybrid charging circuit.

301 399 301 322 340 301 310 When the power supply deviceis a model which does not support the PPS function, the control circuitmay make a request for outputting the power signal to the power supply devicethrough the data terminaland control the first power conversion circuitto operate in the switching charging mode to convert the current value and/or the voltage value of the power signal received from the power supply deviceaccording to a charging state of the battery.

340 399 340 399 310 340 399 340 399 310 340 310 310 399 When the first power conversion circuitoperates in the switching charging mode according to the control of the control circuit, the first power conversion circuitmay support constant current (CC) and constant voltage (CV) charging. For example, the control circuitmay measure a voltage “VBAT” of the batteryand a current “IBAT” flowing into the battery. The first power conversion circuitmay constantly maintain the IBAT as a charging current value configured by the control circuit(or the processor) such that the VBAT increases up to a predetermined target voltage value while the charging mode is configured as the CC mode. The target voltage value may be the same as a voltage difference between positive (+) and negative (−) poles of the battery when the battery is in a full charge state. The full charge may mean a state of charge (SOC) when a charging rate of the battery reaches a maximum charging amount configured without fear of burning or explosion. When the VBAT reaches the target voltage value while the battery is charged, the charging mode may be switched to the CV mode. When the VBAT reaches the target voltage value and the charging mode is switched from the CC mode to the CV mode, the first power conversion circuitmay maintain the VBAT as the target voltage value by gradually decreasing the IBAT according to the control of the control circuit. When the IBAT decreases to a predetermined current value (for example, topoff current value) for complete charging while the batteryis charged in the CV mode, the first power conversion circuitmay complete charging of the batteryby stopping outputting the power signal to the batteryon the basis of the control of control circuit.

301 399 340 340 340 301 322 When the power supply deviceis a model supporting the PPS function, the control circuitmay control the first power conversion circuitto operate in the direct charging mode by converting the voltage value of the power signal to a fixed voltage conversion ratio (a ratio of the voltage value of the power signal output from the first power conversion circuitto the voltage value of the power signal input into the first power conversion circuit) (for example, 2:1 (=50%)) and control the power supply deviceto support the CC and CV modes through the data terminal.

340 399 340 340 310 340 340 340 340 340 340 340 340 340 340 b a a b a b. When the first power conversion circuitoperates in the direct charging mode according to the control of the control circuit, the first power conversion circuitmay convert the voltage value and the current value of the power signal input into the first input terminal, but minimize power loss compared to the operation in the switching charging mode to quickly charge the battery. When the power loss of the first power conversion circuitis ideally ‘0’, a ratio of output power output from the first output terminalof the first power conversion circuitto input power input into the first input terminalof the first power conversion circuitmay be ‘1’. For example, the first power conversion circuitmay distribute the voltage input into the first input terminalby using one or more capacitors, so as to make the input voltage 1/N times (N being a natural number equal to or larger than 2) and output the voltage to the outside of the first output terminal, and make the current input into the first input terminalN times by using one or more capacitors and output the current to the outside of the first output terminal

340 341 342 343 344 340 300 345 341 342 343 344 346 342 343 340 350 a b According to an embodiment of the disclosure, the first power conversion circuitmay include QA1, QA2, QA3, and QA4which are switches (for example, metal oxide semiconductor field effect transistor (MOSFET)) connected in series from the first input terminalto the ground of the electronic device, a first capacitor (for example, a flying capacitor), of which one end is connected to a point between QA1and QA2and the other end is connected to a point between QA3and QA4, and an inductor, of which one end is connected to a point between QA2and QA3and the other end is connected to the first output terminal, so as to support the direct charging mode and the switching charging mode. The second power conversion circuitis described below.

4 FIG.A 4 FIG.B 4 4 FIGS.C andD 4 4 4 FIGS.E,F, andG 340 illustrates a first switching state of a first power conversion circuit to charge a first capacitor and a power transmission path in a first switching state according to an embodiment of the disclosure.illustrates a second switching state of a first power conversion circuit to discharge a first capacitor and a power transmission path in a second switching state according to an embodiment of the disclosure.illustrate a third switching state and a fourth switching state for maintaining a first capacitor in a floating state in which a first capacitor is neither charged nor discharged according to various embodiments of the disclosure.illustrate conversion of a switching state of a first power conversion circuitaccording to various embodiments of the disclosure.

4 FIG.A 340 341 345 341 343 342 344 345 340 343 346 401 341 345 343 346 340 345 340 345 342 343 b a Referring to, the power signal inflowing into the first input terminalmay pass through QA1and may be charged to the first capacitorduring a state in which QA1and QA3are closed (or turned on) and QA2and QA4are open (or turned off) (hereinafter, referred to as a first switching state). The power signal may be output from the first capacitorto the second output terminalvia QA3and the inductor. Accordingly, a current pathalong which the power signal flows in the order of QA1, the first capacitor, QA3, and the inductormay be configured in the first power conversion circuit. In the first switching state, the voltage is distributed by the first capacitor, and thus the relation of “VLX=Vin−VCF=Vin/2” may be established. Vin is an input voltage of the power signal flowing into the first input terminal, VCF is a voltage of the first capacitor, and VLX is a voltage at a point connecting QA2and QA3.

4 FIG.B 345 340 342 346 341 343 342 344 402 344 345 342 346 340 345 b Referring to, the power signal charging to the first capacitormay be output to the second output terminalvia QA2and the inductorduring a state in which QA1and QA3are open and QA2and QA4are closed (hereinafter, referred to as a second switching state). Accordingly, a current pathalong which the current signal flows in the order of QA4, the first capacitor, QA2, and the inductormay be configured in the first power conversion circuit. In the second switching state, the first capacitormay be discharged, and thus the relation of “VLX=VCF=Vin/2” may be established.

4 FIG.C 345 340 340 341 342 341 342 343 344 403 341 342 346 340 a b Referring to, the first capacitormay remain in the floating state and the power signal flowing into the first input terminalmay be output to the second output terminalvia QA1and QA2during a state in which QA1and QA2are closed and QA3and QA4are open (hereinafter, referred to as a third switching state). Accordingly, a current pathalong which the power signal flows in the order of QA1, QA2, and the inductormay be configured in the first power conversion circuit. In the third switching state, the relation of “VLX=Vin” may be established.

4 FIG.D 345 341 342 343 344 Referring to, the first capacitormay remain in the floating state during a state in which both QA1and QA2are open (hereinafter, referred to as a fourth switching state). In the fourth switch state, the relation of “VLX=0” may be established. In the fourth switching state, both QA3and QA4may be in the open state or may be in the closed state as illustrated.

4 FIG.E 399 340 340 399 340 411 410 410 345 346 340 Referring to, the control circuitmay control the first power conversion circuitto alternate the first switching state and the second switching state. According to the control, the first power conversion circuitmay operate in the direct charging mode. In an embodiment of the disclosure, the control circuitmay control the first power conversion circuitto periodically switch the first switching state and the second switching state by configuring a ratio of the durationof the first switching state to one alternating cyclein which the first switching state switches to the second switching state (for example, a duty rate or a duty cycle) as 50% and tuning a switching frequency for determining an alternating cycleto a resonant frequency of the first capacitorand the inductor. Accordingly, the first power conversion circuitmay operate as a direct charging circuit of which a voltage conversion ratio is fixed to about 50%.

399 340 340 The control circuitmay control the first power conversion circuitto repeat the first switching state and the second switching state but switch from the first switching state to the second switching state via the third switching state or the fourth switching state. According to the control, the first power conversion circuitmay operate as a switching charging circuit capable of adjusting a voltage conversion ratio.

4 FIG.F 399 340 420 420 345 346 340 340 421 420 b Referring to, the control circuitmay control the first power conversion circuitto switch from the first switching state to the third switching state and from the third switching state to the second switching state during one alternating cyclein the state in which the switching frequency for determining the alternating cycleis tuned to the resonant frequency of the first capacitorand the inductoror is configured as a frequency higher than the resonant frequency. Accordingly, the first power conversion circuitmay operate as a switching charging circuit for configuring a voltage conversion ratio to be higher than 50%. For example, the voltage output from the first output terminalmay be higher than Vin/2. As the duty cycle indicating a ratio of the timeduring which the third switching state continues to one alternating cycleis higher, the output voltage may be closer to Vin.

4 FIG.F 399 340 430 430 345 346 340 340 431 430 b Referring to, the control circuitmay control the first power conversion circuitto switch from the first switching state to the fourth switching state and from the fourth switching state to the second switching state during one alternating cyclein the state in which the switching frequency for determining the alternating cycleis tuned to the resonant frequency of the first capacitorand the inductoror is configured as a frequency higher than the resonant frequency. Accordingly, the first power conversion circuitmay operate as a switching charging circuit for configuring a voltage conversion ratio to be lower than 50%. For example, the voltage output from the first output terminalmay be lower than Vin/2. As the duty cycle indicating a ratio of the timeduring which the fourth switching state continues to one alternating cycleis higher, the output voltage may be closer to 0.

3 FIG. 350 350 321 350 370 310 350 310 370 360 360 360 310 370 340 310 360 310 370 300 360 300 350 310 370 a b b a b b Referring to, the second power conversion circuitmay include a second input terminalelectrically connected to the power terminaland a second output terminalelectrically connected to the load circuitand the battery. As illustrated, the second output terminalmay be directly connected to the battery, and the load circuitmay be electrically connected thereto through the battery switch. The battery switch(“QBAT”) may operate as a diodefor allowing the current in the direct from the batteryto the load circuitand blocking the current flow in the direction from the first output terminalto the battery. Accordingly, regardless of the battery switch, a discharging path along which power is supplied from the batteryto the load circuitmay be configured in the electronic device. The battery switchmay be omitted from the configuration of the electronic device. That is, as the second output terminalis directly connected to the battery, the same may be directly connected to the load circuit.

350 340 350 351 352 350 350 353 354 350 300 355 351 352 353 354 a b b The second power conversion circuitmay be configured to support the first power conversion circuitto operate in a direct charging mode in which a voltage conversion ratio is fixed to about 50%. According to an embodiment of the disclosure, the second power conversion circuitmay include QB1and QB2which are switches (for example, MOSFET) connected from the second input terminalto the second output terminalin series, QB3and QB4which are switches (for example, MOSFET) connected from the second output terminalto the ground of the electronic devicein series, and a second capacitor(for example, a flying capacitor) of which one end is connected to a point between QB1and QB2and the other end is connected to a point between QB3and QB4.

5 FIG.A 5 FIG.B illustrates a fifth switching state for discharging a second capacitor in a second power conversion circuit and a power transmission path in the fifth switching state according to an embodiment of the disclosure.illustrates a sixth switching state for charging a second capacitor in a second power conversion circuit and a power transmission path in the sixth switching state according to an embodiment of the disclosure.

5 FIG.A 354 355 352 501 350 350 351 353 352 345 b Referring to, the power signal may flow in the order of QB4, the second capacitor, and QB2, and a current pathfor the output to the outside through the second output terminalmay be configured in the second power conversion circuitduring a state in which QB1and QB3are open and QA2and QA4are closed (hereinafter, referred to as a fifth switching state).

5 FIG.B 351 355 353 502 350 350 351 353 352 345 b Referring to, the power signal may flow in the order of QB1, the second capacitor, and QB3, and a current pathfor the output to the outside through the second output terminalmay be configured in the second power conversion circuitduring a state in which QB1and QB3are closed and QB2and QB4are open (hereinafter, referred to as a sixth switching state).

399 340 340 350 399 340 350 399 345 346 340 340 340 399 350 350 399 340 350 340 The control circuitmay remove or minimize ripple (AC component) of the power signal output from the first power conversion circuitby controlling the power conversion circuitsandin an interleaving scheme. The interleaving scheme may simultaneously output a first switching control signal for operating the control circuitin a direct charging mode to the first power conversion circuitand output a second switching control signal having the same frequency as the first switching control signal but a phase difference of 180 degrees to the second power conversion circuit. For example, the control circuitmay output the first switching control signal having a switching frequency which is the same as the resonant frequency of the first capacitorand the inductorand a duty cycle fixed to 50% and making the first power conversion circuitalternate the first switching state and the second switching state to the first power conversion circuit. Simultaneously with outputting the first switching control signal to the first power conversion circuit, the control circuitmay output, to the second power conversion circuit, the second switching control signal for making the second power conversion circuitbe in the fifth switching state when the control circuithas a frequency which is the same as the first switching control signal and the first power conversion circuitis in the first switching state and making the second power conversion circuitbe in the sixth switching state when the first power conversion circuitis in the second switching state.

399 320 322 399 301 301 301 301 399 310 399 300 322 300 301 399 301 301 322 399 340 350 399 The control circuitmay identify the type of an external device connected to the connector. For example, on the basis of data received from the external device through the data terminal, the control circuitmay identify whether the external device is the power supply devicefor supplying power, whether the power supply deviceis a model supporting the PPS function, and a fixed voltage value of the power signal output from the power supply devicewhen the power supply deviceis a model which does not support the PPS function. The control circuitmay perform power delivery (PD) communication for charging the batteryon the basis of identification information. For example, the control circuitmay perform an operation of negotiating about which is a source for supplying power and which is a sink for receiving power among the external device and the electronic deviceby performing PD communication with the external device through the data terminal. When the electronic deviceis determined as the sink (power reception device) and the external device is determined as the source (power supply device), the control circuitmay perform an operation of negotiating about a current value and/or a voltage value of the power signal to be supplied by the power supply deviceby performing PD communication with the power supply devicethrough the data terminal. The control circuitmay transmit identification information of the external device to the processor. Accordingly, the negotiation and/or the control for the power conversion circuitsandmay be performed by the processor instead of the control circuiton the basis of the received identification information.

399 350 340 399 351 353 354 340 The control circuitmay deactivate the second power conversion circuitwhile the first power conversion circuitoperates in the switching charging mode. For example, the control circuitmay open QB1(or QB3and QB4) while the first power conversion circuitoperates in the switching charging mode.

300 300 The electronic devicemay have much power consumption to execute an application (for example, game) requiring high-specification performance. Internal temperature of the battery which is being charged may be aggravated by heat generated due to much power consumption. According to an embodiment of the disclosure, a pass through mode (or a low heating mode) for suppressing an increase in internal temperature may be executed in the electronic device.

399 300 310 370 399 350 340 399 360 340 310 310 399 360 The control circuitmay operate the electronic devicein the pass through mode in which power supply to the batteryis paused and power is supplied to the load circuit. The control circuitmay deactivate the second power conversion circuitand control the first power conversion circuitto operate in the direct charging mode during the pass through mode. Further, the control circuitmay open the battery switchso that power is not supplied from the first power conversion circuitto the battery. As described above, an increase in internal temperature of the batterycan be suppressed as the battery charging is paused during the pass through mode. In the state in which the pass through mode is in a deactivated mode, the control circuitmay close the battery switch.

300 301 301 310 399 300 399 300 300 399 The pass through mode may be activated when a predetermined event is generated. The predetermined event corresponds to the performance of the pass through mode, and may be, for example, an event (for example, a user input) making a request for executing a specific application (for example, game) or the execution of the specific application in the electronic device. A type of the power supply devicemay be considered as a condition for performing the pass through mode. For example, when the power supply deviceis a model supporting the PPS function or a model which does not support the PPS function but is recognized as a model which outputs a power signal of a fixed output voltage (for example, about double the full charge voltage (for example, 4.4 to 4.5 V) of the batter) and the event is generated, the control circuitmay operate the electronic devicein the pass through mode. An SOC may be considered as an additional condition for performing the pass through mode. For example, the SOC (or a charging rate) may be digitalized into a percentage, and, when the SOC is higher than or equal to a predetermined rate (for example, 20%), the control circuitmay perform the pass through mode. The processor may display a menu for enabling the user to configure whether to activate the pass through mode on the display. For example, when the electronic deviceis always connected to the adaptor (for example, a display product in a store), it may be worrying about the risk of excessive charge of the battery and battery damage (for example, swelling) according thereto. In this case, the electronic devicemay be configured to operate in the pass through mode, and thus overcharging may be prevented. The processor may store configuration information indicating whether to activate, configured through the configuration menu, in the memory. When a predetermined event is generated, the processor may identify whether the pass through mode is activated on the basis of the configuration information. When the activation is configured on the basis of the identification result, the processor may make a request for performing the pass through mode to the control circuit. When the deactivation is configured, the pass through mode may not be performed event through the predetermined event is generated.

399 340 399 340 345 346 390 340 390 340 340 399 350 310 301 310 The control circuitmay control the first power conversion circuitto operate in a quasi direction charging mode for finely adjusting a voltage conversion ratio (for example, perform fine adjustment at 50%). For example, the control circuitmay synchronize the switching frequency of the first power conversion circuitwith the resonant frequency of the first capacitorand the inductoror configure the switching frequency to be higher. The control circuitmay finely adjust the voltage conversion ratio to be higher than 50% by controlling the first power conversion circuitto switch from the first switching state to the second switching state via the third switching state. The control circuitmay finely adjust the voltage conversion ratio to be lower than 50% by controlling the first power conversion circuitfrom the first switching state to the second switching state via the fourth switching state. When the first power conversion circuitswitches from the first switching state to the second switching state, the control circuitmay control the second power conversion circuitto switch from the fifth switching state to the sixth switching state. Through such a control operation, the current value and/or the voltage value of the power signal supplied to the batterymay be changed. When the power supply deviceis a model which does not support the PPS function but is recognized as a model which outputs a power signal of a fixed output voltage about twice as much as the full charge voltage (for example, 4.4 to 4.5 V) of the battery, the quasi direct charging mode may be activated.

6 FIG. illustrates waveforms of a current in power conversion circuits while a power supply device operates in a constant current (CC) mode and an electronic device operates in a direct charging mode according to an embodiment of the disclosure.

6 FIG. 610 340 620 341 340 630 351 350 345 346 340 350 310 370 Referring to, a first current waveformindicates the current “IL” of a power signal output from the first power conversion circuit. A second current waveformindicates the current “IQA1” of a power signal passing through QA1in the first power conversion circuit. A third current waveformindicates the current “IQB1” of a power signal passing through QB1in the second power conversion circuit. By resonance of the first capacitorand the inductor, the current in the first power conversion circuitmay have a sine wave form having relative small loss in switching. For example, IQA1 and IL may have the sine wave form starting at ‘0’ and ending at ‘0’ in every time point at which the switching state is changed. Ripple may be removed or minimized from IL by a power signal output from the second power conversion circuit. The power signal from which ripple is removed (or minimized) may be supplied to the batteryand the load circuit.

7 FIG. illustrates waveforms of a current in a first power conversion circuit while an electronic device operates in a pass through mode according to an embodiment of the disclosure.

7 FIG. 710 340 720 341 340 345 346 Referring to, a first current waveformindicates the current “IL” of a power signal output from the first power conversion circuit. A second current waveformindicates the current “IQA1” of a power signal passing through QA1in the first power conversion circuit. IQA1 and IL may have the sine wave form starting at ‘0’ and ending at ‘0’ in every time point at which the switching state is changed by resonance of the first capacitorand the inductor.

8 FIG. illustrates waveforms of a current in a first power conversion circuit while an electronic device operates in a switching charging mode according to an embodiment of the disclosure.

8 FIG. 810 340 820 341 340 830 342 340 340 345 346 Referring to, a first current waveformindicates the current “IL” of a power signal output from the first power conversion circuit. A second current waveformindicates the current “IQA1” of a power signal passing through QA1in the first power conversion circuit. A third current waveformindicates the current “IQA2” of a power signal passing through QA2in the first power conversion circuit. The switching frequency of the first power conversion circuitmay be configured to be higher than the resonant frequency of the first capacitorand the inductorand, accordingly, IQA1, IQA2, and IL may have the form in which a linear increase appears during at least some intervals from a time point at which the switching state is changed, rather than the sine wave form.

399 340 341 342 399 340 340 In the switching charging mode, the state change from the first switching state to the second switching state may be made via the third switching state or the fourth switching state. For example, the control circuitmay switch the first power conversion circuitfrom the first switching state to the fourth switching state in which both QA1and QA2are open. The control circuitmay maintain the fourth switching state for a predetermined time “t1” and, when t1 passes, switch the first power conversion circuitfrom the fourth switching state to the second switching state. According to the state change, the voltage conversion ratio may be maintained to be lower than 50% in the first power conversion circuit. As ‘t1’ is longer, the voltage conversion ratio may be configured to be lower.

9 FIG. illustrates waveforms of a current in power conversion circuits while an electronic device operates in a quasi-direct charging mode according to an embodiment of the disclosure.

9 FIG. 910 340 920 341 340 930 351 350 Referring to, a first current waveformindicates the current “IL” of a power signal output from the first power conversion circuit. A second current waveformindicates the current “IQA1” of a power signal passing through QA1in the first power conversion circuit. A third current waveformindicates the current “IQB1” of a power signal passing through QB1in the second power conversion circuit.

399 340 341 342 399 340 340 399 350 340 In the quasi direct charging mode, the state change from the first switching state to the second switching state may be made via the third switching state or the fourth switching state. For example, the control circuitmay switch the first power conversion circuitfrom the first switching state to the fourth switching state in which both QA1and QA2are open. The control circuitmay maintain the fourth switching state for a predetermined time ‘t2’ and, when t2 passes, switch the first power conversion circuitfrom the fourth switching state to the second switching state. When the first power conversion circuitswitches from the fourth switching state to the second switching state or within the time t2, the control circuitmay switch the second power conversion circuitfrom the fifth switching state to the sixth switching state. According to the state change, the voltage conversion ratio in the first power conversion circuitmay be finely adjusted to be lower than 50%.

10 FIG. is a flowchart illustrating operations for supplying power of a battery and a load circuit according to an embodiment of the disclosure.

10 FIG. 1010 399 301 320 301 Referring to, in operation, the control circuitmay identify whether the power supply deviceconnected to the connectorsupports the PPS function through data communication with the power supply device.

301 399 340 350 1020 399 345 346 340 350 When it is identified that the power supply deviceis the model supporting the PPS function, the control circuitmay operate the first power conversion circuitand the second power conversion circuitin the direct charging mode in operation. For example, the control circuitmay simultaneously output a first switching control signal having the same switching frequency as the resonant frequency of the first capacitorand the inductorand having a duty cycle of 50% to the first power conversion circuitand output a second switching control signal having the same switching frequency and duty cycle but a phase difference of 180 degrees to the second power conversion circuit.

301 399 350 340 1030 399 345 346 340 341 342 341 342 342 341 341 344 344 341 344 341 342 399 310 310 399 340 399 399 340 399 When it is identified that the power supply deviceis the model which does not support the PPS function, the control circuitmay deactivate the second power conversion circuitand operate the first power conversion circuitin the switching charging mode in operation. For example, the control circuitmay output a third switching control signal having a frequency that is the same as or higher than the resonant frequency of the first capacitorand the inductorto the first power conversion circuit. The third switching control signal may make QA1and QA2have the same duty cycle and a phase difference of 180 degrees. For example, a duration time of the closed state of QA1is the same as a duration time of the closed state of QA2in one cycle of the third switching control signal, but QA2may be in the open state when QA1is in the closed state. The third switching control signal may make QA1and QA4have the complementary relation. For example, QA4is open when QA1is closed, and QA4is closed when QA1is open. The third switching control signal may make QA2and QA3 also have the complementary relation. The control circuitmay monitor the charging state of the batteryand make the third switching control signal have the third switching state or the fourth switching state on the basis of the monitoring result. For example, when VBAT exceeds a target voltage value (for example, a full charge voltage value of the battery), the control circuitmay output the third switching control signal alternating the first switching state and the second switching state via the third switching state to the first power conversion circuit. The control circuitmay control a ratio of the duration time of the third switching state to the cycle of the third switching control signal on the basis of the monitoring result. When VBAT is lower than the target voltage value, the control circuitmay output the third switching control signal alternating the first switching state and the second switching state via the fourth switching state to the first power conversion circuit. The control circuitmay control a ratio of the duration time of the fourth switching state to the cycle of the third switching control signal on the basis of the monitoring result.

11 FIG. is a flowchart illustrating operations for supplying power of a battery and a load circuit according to an embodiment of the disclosure.

11 FIG. 1110 399 301 320 301 Referring to, in operation, the control circuitmay acquire device information of the power supply deviceconnected to the connectorthrough data communication with the power supply device.

1120 399 301 320 In operation, the control circuitmay identify whether the power supply deviceconnected to the connectorsupports the PPS function in the device information.

301 399 340 350 1130 399 345 346 340 350 When it is identified that the power supply deviceis the model supporting the PPS function, the control circuitmay operate the first power conversion circuitand the second power conversion circuitin the direct charging mode in operation. For example, the control circuitmay simultaneously output a first switching control signal having the same switching frequency as the resonant frequency of the first capacitorand the inductorand having a duty cycle of 50% to the first power conversion circuitand output a second switching control signal having the same switching frequency and duty cycle but a phase difference of 180 degrees to the second power conversion circuit.

301 399 301 310 301 1140 When it is identified that the power supply deviceis the model which does not support the PPS function, the control circuitmay identify whether a voltage value which can be supplied by the power supply deviceis about twice the full charge voltage vale of the battery(for example, the power supply devicesupports 9 V and the full charge voltage is 4.4 to 4.5 V) through the device information in operation.

301 301 310 399 350 340 1150 399 345 346 341 342 341 344 342 343 340 399 310 When it is identified that the power supply deviceis the model which does not support the PPS function and the voltage value which can be supplied by the power supply deviceis not twice the full charge voltage value of the battery, the control circuitmay deactivate the second power conversion circuitand operate the first power conversion circuitin the switching charging mode in operation. For example, the control circuitmay output the third switching control signal having the frequency which is the same as or higher than the resonant frequency of the first capacitorand the inductorand making QA1and QA2have the same duty cycle and a phase difference of 180 degrees, QA1and QA4have the complementary relation, and QA2and QA3have the complementary relation to the first power conversion circuit. The control circuitmay monitor the charging state of the batteryand make the third switching control signal have the third switching state or the fourth switching state on the basis of the monitoring result.

301 301 310 399 340 350 1160 399 345 346 341 342 341 344 342 343 340 399 350 399 310 310 399 340 399 399 340 399 When it is identified that the power supply deviceis the model which does not support the PPS function and the voltage value which can be supplied by the power supply deviceis about twice the full charge voltage value of the battery, the control circuitmay operate the first power conversion circuitand the second power conversion circuitin the quasi direct charging mode in operation. For example, the control circuitmay output the fourth switching control signal having the switching frequency which is the same as or higher than the resonant frequency of the first capacitorand the inductorand making QA1and QA2have the same duty cycle and a phase difference of 180 degrees, QA1and QA4have the complementary relation, and QA2and QA3have the complementary relation to the first power conversion circuit. Simultaneously, the control circuitmay output a fifth switching control signal having the same switching frequency as the fourth switching control signal, a duty cycle of 50%, and a phase difference of 180 degrees from the fourth switching control signal to the second power conversion circuit. The control circuitmay monitor the charging state of the batteryand make the fourth switching control signal have the third switching state or the fourth switching state on the basis of the monitoring result. For example, when VBAT exceeds the target voltage value (for example, the full charge voltage value of the battery), the control circuitmay output the fourth switching control signal alternating the first switching state and the second switching state via the third switching state to the first power conversion circuit. The control circuitmay control a ratio of the duration time of the third switching state to the cycle of the fourth switching control signal on the basis of the monitoring result. When VBAT is lower than the target voltage value, the control circuitmay output the fourth switching control signal alternating the first switching state and the second switching state via the fourth switching state to the first power conversion circuit. The control circuitmay control a ratio of the duration time of the fourth switching state to the cycle of the third switching control signal on the basis of the monitoring result.

12 FIG. is a flowchart illustrating operations for stopping power supply to a battery and supplying power to a load circuit according to an embodiment of the disclosure.

12 FIG. 1210 399 399 301 310 301 Referring to, in operation, the control circuitmay recognize that a first condition for activating a pass through mode is satisfied. For example, the control circuitmay recognize, as the first condition, that the power supply deviceis the model supporting the PPS function or the model which does not support the PPS function but is a model which outputs a power signal of a fixed output voltage that is twice of the full charge voltage value of the battery(for example, 4.5 V) through data communication with the power supply device.

1220 399 399 In operation, the control circuitmay recognize that a second condition for activating a pass through mode is satisfied. For example, the control circuitmay recognize the generation of a specific event (for example, execution of the specific application or a user input making a request for executing the specific event or activating the pass through mode) as the second condition.

399 350 340 360 1230 399 345 346 340 As the first condition and the second condition are satisfied, the control circuitmay deactivate the second power conversion circuitand operate the first power conversion circuitin the pass through mode while the battery switchis open in operation. For example, the control circuitmay output a first switching control signal having the same switching frequency as the resonant frequency of the first capacitorand the inductorand a duty cycle of 50% to the first power conversion circuit.

399 399 A battery charging rate may be considered as an additional condition for activating the pass through mode. For example, when the charging rate is lower than a predetermined rate even though the first condition and the second condition are satisfied, the control circuitmay deter activation of the pass through mode. When the charging rate is higher than or equal to a predetermined rate, the control circuitmay activate the pass through mode.

399 399 360 340 350 1130 1160 11 FIG. The control circuitmay recognize the generation of a specific event (for example, termination of execution of the specific application or a user input making a request for deactivating the pass through mode) for deactivating the pass through mode. As the specific event for deactivating the pass through mode is generated, the control circuitmay close the battery switchand operate the first power conversion circuitand the second power conversion circuitin a direct charging mode or a quasi direct charging mode (for example, operationor operationof).

300 320 340 350 399 1 1 1 2 1 3 1 4 1 2 1 3 1 1 1 2 1 3 1 4 2 1 2 2 2 3 2 4 2 1 2 2 2 3 2 4 1 1 1 3 1 2 1 4 1 1 1 3 1 2 1 4 1 1 1 2 1 1 1 4 1 2 1 3 1 1 1 2 1 1 1 2 3 FIG. According to an embodiment of the disclosure, a portable electronic device (for example, the electronic deviceof) may include a connector (for example, the connector) including a power terminal and a data terminal; a first power conversion circuit (for example, the first power conversion circuit); a second power conversion circuit (for example, the second power conversion circuit); and a control circuit (for example, the control circuit) electrically connected to the data terminal, the first power conversion circuit, and the second power conversion circuit. The first power conversion circuit may include: a first input terminal connected to the power terminal; a first output terminal connected to a load circuit and a battery of the portable electronic device; a switch-, a switch-, a switch-, and a switch-connected in series from the first input terminal to a ground of the portable electronic device; an inductor having one end connected to a point between the switch-and the switch-and the other end connected to the first output terminal; and a first capacitor having one end connected to a point between the switch-and the switch-and the other end connected to a point between the switch-and the switch-. The second power conversion circuit may include: a second input terminal connected to the power terminal; a second output terminal connected to the load circuit and the battery; a switch-and a switch-connected in series from the second input terminal to the second output terminal; a switch-and a switch-connected in series from the second output terminal to the ground; and a second capacitor having one end connected to a point between the switch-and the switch-and the other end connected to a point between the switch-and the switch-. The control circuit may be configured to identify whether a power supply device connected to the connector supports a programmable power supply (PPS) function through the data terminal. The control circuit may be configured to, in case that it is identified that the power supply device supports the PPS function, output a first switching control signal having a switching frequency equal to a resonant frequency of the first capacitor and the inductor and a duty cycle of 50% and alternating a first switching state in which the switch-and the switch-are closed and the switch-and the switch-are open and a second switching state in which the switch-and the switch-are open and the switch-and the switch-are closed to the first power conversion circuit and output a second switching control signal having a switching frequency and a duty cycle, which are identical to the switching frequency and the duty cycle of the first switching control signal but a phase difference of 180 degrees from the first switching control signal to the second power conversion circuit. The control circuit may be configured to, in case that it is identified that the power supply device does not support the PPS function, deactivate the second power conversion circuit and output a third switching control signal having a switching frequency equal to or higher than the resonant frequency of the first capacitor and the inductor, making the switch-and the switch-have an equal duty cycle and a phase difference of 180 degrees, making the switch-and the switch-have a complementary relation, and making the switch-and the switch-have a complementary relation to the first power conversion circuit. The control circuit may be configured to make the third switching control signal have a third switching state in which both the switch-and the switch-are closed or a fourth switching state in which both the switch-and the switch-are open according to the charging state of the battery.

1 1 1 2 1 1 1 4 1 2 1 3 1 1 1 2 1 1 1 2 The control circuit may be configured to, in case that it is identified that the power supply device does not support the PPS function but a voltage value which can be supplied is a predetermined value, output a fourth switching control signal having a switching frequency equal to or higher than the resonant frequency of the first capacitor and the inductor and making the switch-and the switch-have an equal duty cycle and a phase difference of 180 degrees, making the switch-and the switch-have a complementary relation, and making the switch-and the switch-have a complementary relation to the first power conversion circuit. The control circuit may be configured to output a fifth switching control signal having a switching frequency equal to the switching frequency of the fourth switching control signal and a duty cycle of 50% but a phase difference of 180 degrees from the fourth switching control signal to the second power conversion circuit. The control circuit may be configured to make the fourth switching control signal have the third switching state in which both the switch-and the switch-are closed or the fourth switching state in which both the switch-and the switch-are open according to the charging state of the battery.

340 The control circuit may be configured to, in case that a voltage of the battery exceeds the full charge voltage value, output the fourth switching control signal for alternating the first switching state and the second switching state via the fourth switching state to the first power conversion circuit. The control circuit may be configured to, in case that the voltage of the battery is lower than the full charge voltage value, output the fourth switching control signal for alternating the first switching state and the second switching state via the third switching state to the first power conversion circuit.

360 The portable electronic device may further include a battery switch (for example, the battery switch). One end of the battery switch may be connected to a point between the first output terminal and the load circuit and the other end of the battery switch may be connected to a point between the second output terminal and the battery. The control circuit may be configured to, in case that it is identified that the power supply device supports the PPS function and a predetermined event is generated by the electronic device, deactivate the second power conversion circuit and output the first switching control signal to the first power conversion circuit in a state in which the battery switch is open.

The predetermined event may include execution of a specific application or a predetermined user input.

The battery switch may include a diode making a current flow from the battery to the load circuit.

The control circuit may be configured to defer opening of the battery switch in case that a charging rate of the battery is lower than a predetermined rate, and open the battery switch in case that the charging rate of the battery is higher than or equal to the predetermined rate.

The control circuit may be configured to, in case that it is identified that the power supply device does not support the PPS function, a voltage value which can be supplied is a predetermined value, and a predetermined event is generated by the electronic device, deactivate the second power conversion circuit and output the first switching control signal to the first power conversion circuit in a state in which the battery switch is open.

300 320 340 350 360 399 1 1 1 2 1 3 1 4 1 2 1 3 1 1 1 2 1 3 1 4 2 1 2 2 2 3 2 4 2 1 2 2 2 3 2 4 1 1 1 3 1 2 1 4 1 1 1 3 1 2 1 4 3 FIG. According to an embodiment of the disclosure, a portable electronic device (for example, the electronic deviceof) may include: a connector (for example, the connector) including a power terminal and a data terminal; a first power conversion circuit (for example, the first power conversion circuit); a second power conversion circuit (for example, the second power conversion circuit); a battery switch (for example, the battery switch); and a control circuit (the control circuit) electrically connected to the data terminal, the first power conversion circuit, the second power conversion circuit, and the battery switch. The first power conversion circuit may include: a first input terminal connected to the power terminal; a first output terminal connected to a load circuit of the portable electronic device; a switch-, a switch-, a switch-, and a switch-connected in series from the first input terminal to a ground of the portable electronic device; an inductor having one end connected to a point between the switch-and the switch-and the other end connected to the first output terminal; and a first capacitor having one end connected to a point between the switch-and the switch-and the other end connected to a point between the switch-and the switch-The second power conversion circuit may include: a second input terminal connected to the power terminal; a second output terminal connected to a battery of the portable electronic device; a switch-and a switch-connected in series from the second input terminal to the second output terminal; a switch-and a switch-connected in series from the second output terminal to the ground; and a second capacitor having one end connected to a point between the switch-and the switch-and the other end connected to a point between the switch-and the switch-. One end of the battery switch may be connected to a point between the first output terminal and the load circuit and the other end of the battery switch may be connected to a point between the second output terminal and the battery. The control circuit may be configured to, in case that it is identified that the power supply device supports or does not support a PPS function, a voltage value which can be supplied is a predetermined value, and a predetermined first event is generated by the electronic device, open the battery switch, deactivate the second power conversion circuit, and output a first switching control signal having a switching frequency equal to a resonant frequency of the first capacitor and the inductor and a duty cycle of 50% and alternating a first switching state in which the switch-and the switch-are closed and the switch-and switch-are open and a second switching state in which the switch-and the switch-are open and the switch-and the switch-are closed to the first power conversion circuit.

The first event may include execution of a specific application or a predetermined user input.

The battery switch may include a diode making a current flow from the battery to the load circuit.

The control circuit may be configured to defer opening of the battery switch in case that a charging rate of the battery is lower than a predetermined rate, and open the battery switch in case that the charging rate of the battery is higher than or equal to the predetermined rate.

The control circuit may be configured to, case that a predetermined second event is generated by the electronic device, close the battery switch, and output a second switching control signal having a switching frequency and a duty cycle equal to the switching frequency and the duty cycle of the first switching control signal but a phase difference of 180 degrees from the first switching control signal to the second power conversion circuit.

300 320 340 350 1 1 1 2 1 3 1 4 1 2 1 3 1 1 1 2 1 3 1 4 2 1 2 2 2 3 2 4 2 1 2 2 2 3 2 4 1010 1 1 1 3 1 2 1 4 1 1 1 3 1 2 1 4 1020 1130 1 1 1 2 1 1 1 4 1 2 1 3 1030 1150 1 1 1 2 1 1 1 2 1030 1150 3 FIG. According to an embodiment of the disclosure, a method of operating a portable electronic device (for example, the electronic deviceof) is provided. The portable electronic device may include a connector (for example, the connector) including a power terminal and a data terminal, a first power conversion circuit (for example, the first power conversion circuit), and a second power conversion circuit (for example, the second power conversion circuit). The first power conversion circuit may include a first input terminal connected to the power terminal, a first output terminal connected to a load circuit and a battery of the portable electronic device, a switch-, a switch-, a switch-, and a switch-connected in series from the first input terminal to a ground of the portable electronic device, an inductor having one end connected to a point between the switch-and the switch-and the other end connected to the first output terminal, and a first capacitor having one end connected to a point between the switch-and the switch-and the other end connected to a point between the switch-and the switch-. The second power conversion circuit may include a second input terminal connected to the power terminal, a second output terminal connected to the load circuit and the battery, a switch-and a switch-connected in series from the second input terminal to the second output terminal, a switch-and a switch-connected in series from the second output terminal to the ground, and a second capacitor having one end connected to a point between the switch-and the switch-and the other end connected to a point between the switch-and the switch-. The method may include an operation of identifying whether a power supply device connected to the connector supports a PPS (programmable power supply) function through the data terminal (for example, operation), an operation of, in case that it is identified that the power supply device supports the PPS function, outputting a first switching control signal having a switching frequency equal to a resonant frequency of the first capacitor and the inductor and a duty cycle of 50% and alternating a first switching state in which the switch-and the switch-are closed and the switch-and the switch-are open and a second switching state in which the switch-and the switch-are open and the switch-and the switch-are closed to the first power conversion circuit and output a second switching control signal having a switching frequency and a duty cycle, which are identical to the switching frequency and the duty cycle of the first switching control signal but a phase difference of 180 degrees from the first switching control signal to the second power conversion circuit (for example, operationsand), an operation of in case that it is identified that the power supply device does not support the PPS function, deactivating the second power conversion circuit and outputting a third switching control signal having a switching frequency equal to or higher than the resonant frequency of the first capacitor and the inductor, making the switch-and the switch-have an equal duty cycle and a phase difference of 180 degrees, making the switch-and the switch-have a complementary relation, and making the switch-and the switch-have a complementary relation to the first power conversion circuit (for example, operationsand), and an operation of making the third switching control signal have a third switching state in which both the switch-and the switch-are closed or a fourth switching state in which both the switch-and the switch-are open (for example, operationsand) according to the charging state of the battery.

1 1 1 2 1 1 1 4 1 2 1 3 1160 1160 1 1 1 2 1 1 1 2 1160 The method may further include, in case that it is identified that the power supply device does not support the PPS function but a voltage value which can be supplied is a predetermined value: an operation of outputting a fourth switching control signal having a switching frequency equal to or higher than the resonant frequency of the first capacitor and the inductor and making the switch-and the switch-have an equal duty cycle and a phase difference of 180 degrees, making the switch-and the switch-have a complementary relation, and making the switch-and the switch-have a complementary relation to the first power conversion circuit (for example, operation), an operation of outputting a fifth switching control signal having a switching frequency equal to the switching frequency of the fourth switching control signal and a duty cycle of 50% but a phase difference of 180 degrees from the fourth switching control signal to the second power conversion circuit (for example, operation), and an operation of making the fourth switching control signal have the third switching state in which both the switch-and the switch-are closed or the fourth switching state in which both the switch-and the switch-are open (for example, operation) according to the charging state of the battery.

1230 The portable electronic device may include a battery switch having one end connected to a point between the first output terminal and the load circuit and the other end connected to a point between the second output terminal and the battery. The method may further include an operation of, in case that it is identified that the power supply device supports the PPS function and a predetermined event is generated by the electronic device, deactivating the second power conversion circuit and outputting the first switching control signal to the first power conversion circuit in a state in which the battery switch is open (for example, operation).

1230 The portable electronic device may include a battery switch having one end connected to a point between the first output terminal and the load circuit and the other end connected to a point between the second output terminal and the battery. The method may further include an operation of, in case that it is identified that the power supply device does not support the PPS function, a voltage value which can be supplied is a predetermined value, and a predetermined event is generated by the electronic device, deactivating the second power conversion circuit and outputting the first switching control signal to the first power conversion circuit in a state in which the battery switch is open (for example, operation).

While the disclosure has been shown and described with reference to various embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents.